Refrigerator or butter-cooler



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A(1.'M. WHITMAN.

REFRIGBRATOR 0R BUTTER COGLER. .n

No. 529,148. Patenfed Nov. 13, 1894.

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O. M. WHITMAN- 'REFRIGE-RATOR 0R BUT-TER COOLER.

Patented Nov. 13, 1894.

32 I @my Q /@b9 UNITED STATES l 7 PATENT OFFICE.

ORRIN M. WHITMAN, OF BOSTON, MASSACHUSETTS.

REERIGERATOR R BUTTER-COOLER.

SPECIFICATION forming part of Letters Patent No. 529,148, dated.November 13, 1894.

Y Application filed July 20, 1894:. Serial No. 518,126. (No model.)

To aZZ whom it may concern/.-

Be it known that I, ORRIN M. WHITMAN, of Boston, in the county of Suolkvand State of Massachusetts, have invented a new and useful Improvementin Refrigerators or Butter- Coolers, of which the following is aspecification.

This improvement relates particularly to the construction and operationof the swinging windows or doors which afford access to the commodity,whereby the interior of the refrigerator is protected from `admission ofwarm air or escape of cold air whether the windows or doors are raisedand open or lowered and closed, said windows or doors being tight inboth said positions but being free and without danger of binding duringthe process of opening or closing.

The nature of this invention is fully described below, and illustratedin the accompanying drawings, in which- Figurel is a cross verticalsection of a butter-cooler embodying my improvement. Fig.

2 is a front elevation of the same, a part being shown in section online fr, Fig. 1. Fig. 3 is an enlarged vertical section taken throughone of the openings with the door or window removed therefrom, andshowing one of the supports of said' door in different positionsin fulland broken lines. Fig. 4 is'an enlarged section in detail on line y,Fig. 3.

Similar letters of reference indicate corresponding parts.

A represents the chest containing the lower or store-room chamber Bprovided with the usual doors B', and icechamber C, constructed asusual. The ordinary intermediate chambers D are provided in each ofwhich usually lies on its side a tub E of butter. Each of these chambersis commonly provided at its front with some sort ofa glazed door orwindow through which the butter can be seen from the outside, and whichcan be opened in order to obtain access to it. From the fact that thereis much moisture in and about the refrigerator these doors and windowsare apt to bind or stick if they are made sufciently tight to preventthe escape of cold air or the admission of warm air.

It is the principal object of this improve` ment to provide doors orwindows which will move easily and Without binding and which will betight when they are wide open or closed, but comparatively loose or freeduring the process of opening or closing; it being a fact in practicethat owing to the size of the butter keg the doors are never left partlyopen.

H represents the side walls of the openings (of which there are usuallytwo or three) leading to the chamber D. The outer edges of these wallsare each formed on an arc of a circle and are provided with inwardlyprojectiug beads or flanges H', formed on the same arc.

The glazed doors or windows each consists of the frame I sustaining theglass window I which is formed on an arc of a circle corresponding withthe flanges H. This frame l has secured to each of its opposite edges asegment J integral with a rocking support J having an integral foot .Iwhich consists of a piece of segmental gear. This footJ lies in andengages with a rack K which is rigidly secured to or near the wall orside H, one segment, rocking support, segmental gear and rack beingprovided for each end of the window or door I I. It will be noticed thatthe support J is not radial with the curvature of the segmental gear Jbut leans forward, as shown in Figs. l and 3. The effect is that whenthe window is down or closed, as shown in Fig. l, its frame pressestightly against the ange l-I so that cold air cannot escape from therefrigerator. As this window is raised it recedes from the ange, asshown in full lines in Fig. 3, until it reaches its highest point, whenit again binds or presses against the frame, as shownin broken lines inFigs. l and 3. This is, of course, because'when the window is down theforward portion ot' the segmental foot J is in engagement with the rackK, and when it is raised to its fullest extent the rear portion of thefoot is in such engagement; in other words the window does not revolvearound a fixed center inasmuch as its pivotal point moves from front torear while the window is being raised, and from rear to front while it.is being lowered. Thus in practice the window is tight, for in order toobtain access to a keg of butter it must be fully raised.

TOO

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-

1. The rocking or rolling Window or door,

5 comprising a frame formed on an arc of a cirele, the racks K, thesegmental gears J engaging in and rolling on said racks, and thesupporting standards J rigid with said gears and extending to andsecured to said window zo or door, substantially as set forth.

2. The chest provided with the fiange or bead H formed on an arc of acircle, the window frame I formed on a similar arc, the rack K, and thestandards J supporting said win- I 5 dow frame and provided withsegmental gears J at their lower ends engaging with said racks,substantially as described.

3. The chest provided with the flange or bead II formed on an arc of acircle,the window frame I formed on a similar arc, the rack 2c K, andthe standards J supporting said window frame and provided with segmentalgears J at theirlower ends engaging with said racks, said standardsinclining forward on a nonradial line from the gears, substantially as z5 Set forth.

4. The chest provided with the fiange or bead H formed on an arc of acircle, the window frame I formed on a similar arc, the segments Jsecured to said frame, the racks, K, 3o segmental gears J engaging withsaid racks, and the standards J connecting said gears and segments,substantially as described.

ORRIN IWI. WHITMAN.

Vitnesses:

HENRY W. WILLIAMS, A. N. BONNEY.

